1231133202097 has 2 divisors, whose sum is σ = 1231133202098. Its totient is φ = 1231133202096.

The previous prime is 1231133202083. The next prime is 1231133202119. The reversal of 1231133202097 is 7902023311321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870561775521 + 360571426576 = 933039^2 + 600476^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231133202097 - 2³¹ = 1228985718449 is a prime.

It is a super-2 number, since 2×1231133202097² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1231133202797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615566601048 + 615566601049.

It is an arithmetic number, because the mean of its divisors is an integer number (615566601049).

Almost surely, 2^{1231133202097} is an apocalyptic number.

It is an amenable number.

1231133202097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231133202097 is an equidigital number, since it uses as much as digits as its factorization.

1231133202097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 1231133202097 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-three million, two hundred two thousand, ninety-seven".